feat: invisible space warning

src/plugins/preferences/CMakeLists.txt

@@ -196,6 +196,9 @@ set(HEADERS
     common/preferencestreeproxymodel.h
 
     common/preferenceswidget.h
+
+    common/inputmessagenotifier.h
+    common/inputdetectors.h
 )
 
 set(SOURCES
@@ -378,6 +381,9 @@ set(SOURCES
     common/preferencestreeproxymodel.cpp
 
     common/preferenceswidget.cpp
+
+    common/inputmessagenotifier.cpp
+    common/inputdetectors.cpp
 )
 
 set(UI_FORMS

src/plugins/preferences/common/i18n/preferences_common_translation_en.ts

@@ -764,6 +764,37 @@ context (user policy option)</translation>
         <translation>Common</translation>
     </message>
 </context>
+<context>
+    <name>preferences::InputMessageNotifier</name>
+    <message>
+        <source>The input field has a space at the beginning or at the end</source>
+        <translation type="vanished">The input field has a space at the beginning or at the end</translation>
+    </message>
+    <message>
+        <source>There is a folder &apos;.&apos;/&apos;..&apos; in the path input field</source>
+        <translation type="vanished">There is a folder &apos;.&apos;/&apos;..&apos; in the path input field</translation>
+    </message>
+    <message>
+        <source>The path input field contains the path to the folder</source>
+        <translation type="vanished">The path input field contains the path to the folder</translation>
+    </message>
+    <message>
+        <source>The path input field contains a path that is not compatible with windows</source>
+        <translation type="vanished">The path input field contains a path that is not compatible with windows</translation>
+    </message>
+    <message>
+        <source>The path input field contains a relative path</source>
+        <translation type="vanished">The path input field contains a relative path</translation>
+    </message>
+    <message>
+        <source>The path input field contains a path from root</source>
+        <translation type="vanished">The path input field contains a path from root</translation>
+    </message>
+    <message>
+        <source>The path input field contains a network path</source>
+        <translation type="vanished">The path input field contains a network path</translation>
+    </message>
+</context>
 <context>
     <name>preferences::PreferencesTreeView</name>
     <message>

src/plugins/preferences/common/i18n/preferences_common_translation_ru.ts

@@ -765,6 +765,37 @@ context (user policy option)</source>
         <translation>Общие</translation>
     </message>
 </context>
+<context>
+    <name>preferences::InputMessageNotifier</name>
+    <message>
+        <source>The input field has a space at the beginning or at the end</source>
+        <translation type="vanished">Поле ввода содержит пробел в начале или в конце</translation>
+    </message>
+    <message>
+        <source>There is a folder &apos;.&apos;/&apos;..&apos; in the path input field</source>
+        <translation type="vanished">В поле ввода пути есть папка &quot;.&quot;/&quot;..&quot;</translation>
+    </message>
+    <message>
+        <source>The path input field contains the path to the folder</source>
+        <translation type="vanished">Поле ввода пути содержит путь к папке</translation>
+    </message>
+    <message>
+        <source>The path input field contains a path that is not compatible with windows</source>
+        <translation type="vanished">Поле ввода path содержит путь, который несовместим с Windows</translation>
+    </message>
+    <message>
+        <source>The path input field contains a relative path</source>
+        <translation type="vanished">Поле ввода path содержит относительный путь</translation>
+    </message>
+    <message>
+        <source>The path input field contains a path from root</source>
+        <translation type="vanished">Поле ввода path содержит путь от корня</translation>
+    </message>
+    <message>
+        <source>The path input field contains a network path</source>
+        <translation type="vanished">Поле ввода path содержит сетевой путь</translation>
+    </message>
+</context>
 <context>
     <name>preferences::PreferencesTreeView</name>
     <message>

src/plugins/preferences/common/inputdetectors.cpp

@@ -0,0 +1,15 @@
+#include "inputdetectors.h"
+
+namespace preferences {
+
+bool WhitespaceDetector::detect(const QString &input)
+{
+    return input.trimmed() != input;
+}
+
+bool EmptyDetector::detect(const QString &input)
+{
+    return input.length() == 0;
+}
+
+} // namespace preferences

src/plugins/preferences/common/inputdetectors.h

@@ -0,0 +1,42 @@
+/***********************************************************************************************************************
+**
+** Copyright (C) 2021 BaseALT Ltd. <org@basealt.ru>
+**
+** This program is free software; you can redistribute it and/or
+** modify it under the terms of the GNU General Public License
+** as published by the Free Software Foundation; either version 2
+** of the License, or (at your option) any later version.
+**
+** This program is distributed in the hope that it will be useful,
+** but WITHOUT ANY WARRANTY; without even the implied warranty of
+** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+** GNU General Public License for more details.
+**
+** You should have received a copy of the GNU General Public License
+** along with this program; if not, write to the Free Software
+** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+**
+***********************************************************************************************************************/
+
+#ifndef GPUI_INPUTDETECTORS_H
+#define GPUI_INPUTDETECTORS_H
+
+#include "inputmessagenotifier.h"
+
+namespace preferences {
+
+class WhitespaceDetector : public InputDetector
+{
+public:
+    bool detect(const QString &input) override;
+};
+
+class EmptyDetector : public InputDetector
+{
+public:
+    bool detect(const QString &input) override;
+};
+
+} // namespace preferences
+
+#endif // GPUI_INPUTDETECTORS_H

src/plugins/preferences/common/inputmessagenotifier.cpp

@@ -0,0 +1,206 @@
+/***********************************************************************************************************************
+**
+** Copyright (C) 2021 BaseALT Ltd. <org@basealt.ru>
+**
+** This program is free software; you can redistribute it and/or
+** modify it under the terms of the GNU General Public License
+** as published by the Free Software Foundation; either version 2
+** of the License, or (at your option) any later version.
+**
+** This program is distributed in the hope that it will be useful,
+** but WITHOUT ANY WARRANTY; without even the implied warranty of
+** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+** GNU General Public License for more details.
+**
+** You should have received a copy of the GNU General Public License
+** along with this program; if not, write to the Free Software
+** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+**
+***********************************************************************************************************************/
+
+#include "inputmessagenotifier.h"
+#include <algorithm>
+#include <iterator>
+
+namespace preferences {
+
+InputMessageNotifier::DetectElement::DetectElement(QWidget *parent, QLayout *layout,
+                                                   const QString &message,
+                                                   InputMessageNotifier::MessageLevel level)
+{
+    this->m_label = new QLabel(parent);
+    layout->addWidget(this->m_label);
+
+    this->m_label->hide();
+
+    this->m_label->setText(message);
+
+    switch (level) {
+    case InputMessageNotifier::MessageLevel::Warning:
+        this->m_label->setStyleSheet("background-color: rgb(249, 240, 107);\n"
+                                     "color: rgb(0,0,0);\n"
+                                     "border-radius: 10px;\n"
+                                     "padding: 10px;");
+        break;
+
+    default:
+    case InputMessageNotifier::MessageLevel::Error:
+        this->m_label->setStyleSheet("background-color: rgb(246, 97, 81);\n"
+                                     "color: rgb(255, 255, 255);\n"
+                                     "border-radius: 10px;\n"
+                                     "padding: 10px;");
+        break;
+    }
+
+    this->m_level = level;
+}
+InputMessageNotifier::DetectElement::DetectElement(DetectElement &&element)
+{
+    this->m_detected = element.m_detected;
+    this->m_label = element.m_label;
+    this->m_level = element.m_level;
+    element.m_label = nullptr;
+}
+InputMessageNotifier::DetectElement &
+InputMessageNotifier::DetectElement::operator=(DetectElement &&element)
+{
+    if (this->m_label) {
+        delete this->m_label;
+    }
+
+    this->m_detected = element.m_detected;
+    this->m_label = element.m_label;
+    this->m_level = element.m_level;
+    element.m_label = nullptr;
+
+    return *this;
+}
+
+void InputMessageNotifier::DetectElement::detect()
+{
+    this->m_label->show();
+    this->m_detected = true;
+}
+void InputMessageNotifier::DetectElement::undetect()
+{
+    this->m_label->hide();
+    this->m_detected = false;
+}
+
+bool InputMessageNotifier::DetectElement::detected()
+{
+    return this->m_detected;
+}
+
+InputMessageNotifier::MessageLevel InputMessageNotifier::DetectElement::level()
+{
+    return this->m_level;
+}
+
+void InputMessageNotifier::DetectElement::setMessage(const QString &message)
+{
+    this->m_label->setText(message);
+}
+
+InputMessageNotifier::DetectElement::~DetectElement()
+{
+    if (this->m_label) {
+        delete this->m_label;
+    }
+}
+
+InputMessageNotifier::InputMessageNotifier(QWidget *widget) : QWidget(widget)
+{
+    this->m_layout = new QVBoxLayout;
+    this->setLayout(this->m_layout);
+}
+
+size_t InputMessageNotifier::addDetector(std::unique_ptr<InputDetector> detector)
+{
+    this->m_detectors[this->m_nextDetector] = std::move(detector);
+    return this->m_nextDetector++;
+}
+
+void InputMessageNotifier::removeDetector(size_t id)
+{
+    this->m_detectors.erase(id);
+}
+
+void InputMessageNotifier::addInput(const QString &name)
+{
+    this->m_instances[name] = std::move(InputInstance());
+}
+
+void InputMessageNotifier::removeInput(const QString &name)
+{
+    this->m_instances.erase(name);
+}
+
+void InputMessageNotifier::updateInput(const QString &name, const QString &input)
+{
+    auto &instance = this->m_instances[name];
+
+    for (auto &detect : instance) {
+        bool detected = this->m_detectors[detect.first]->detect(input);
+
+        if (detected && !detect.second.detected()) {
+            detect.second.detect();
+            this->incCounter(detect.second.level());
+        } else if (!detected && detect.second.detected()) {
+            detect.second.undetect();
+            this->decCounter(detect.second.level());
+        }
+    }
+}
+
+void InputMessageNotifier::setMessage(const QString &name, size_t detector, const QString &message)
+{
+    auto entry = this->m_instances[name].find(detector);
+    if (entry != this->m_instances[name].end()) {
+        entry->second.setMessage(message);
+    }
+}
+
+void InputMessageNotifier::attachDetector(const QString &name, size_t detector,
+                                          const QString &message, MessageLevel level)
+{
+    this->m_instances[name].insert(std::pair<size_t, DetectElement>(
+            detector, DetectElement(this, this->m_layout, message, level)));
+}
+
+bool InputMessageNotifier::hasAnyError()
+{
+    return this->m_errorCount != 0;
+}
+
+bool InputMessageNotifier::hasAnyWarning()
+{
+    return this->m_warningCount != 0;
+}
+
+InputMessageNotifier::~InputMessageNotifier() { }
+
+void InputMessageNotifier::incCounter(InputMessageNotifier::MessageLevel level)
+{
+    switch (level) {
+    case InputMessageNotifier::MessageLevel::Warning:
+        ++this->m_warningCount;
+        break;
+    case InputMessageNotifier::MessageLevel::Error:
+        ++this->m_errorCount;
+        break;
+    }
+}
+void InputMessageNotifier::decCounter(MessageLevel level)
+{
+    switch (level) {
+    case InputMessageNotifier::MessageLevel::Warning:
+        --this->m_warningCount;
+        break;
+    case InputMessageNotifier::MessageLevel::Error:
+        --this->m_errorCount;
+        break;
+    }
+}
+
+} // namespace preferences